Main function of lenticel is
transpiration
guttation
gaseous exchange
bleeding
Bananas can be prevented from over ripening by
maintaining them at room temperature
refrigeration
dipping in ascorbic acid solution
storing in a freezer
Where do the Casparian bands occur ?
Epidermis
Endodermis
Pericycle
Phloem
In a longitudinal section of root, starting from the tip upward, the four zones occur in the 3 following order
root cap, cell division, cell enlargement, cell maturation
root cap, cell division, cell maturation, cell enlargement
cell division, cell enlargement, cell maturation, root cap
cell division, cell maturation, cell enlargement, root cap
Death of protoplasm is a pre-requisite for a vital function like
transport of sap
transport of food
absorption of water
As the secondary growth takes place (proceeds) in a tree, thickness of
heartwood increases
sapwood increases
both increase
both remain the same
Which meristem helps in increasing girth ?
Lateral meristem
Intercalary meristem
Primary meristem
Apical meristem
In a woody dicotyledons tree, which of the following parts will mainly consist of primary tissues ?
All parts
Stem and root
Flowers, fruits and leaves
Shoot tips and root tips
Which one yields fibre ?
Coconut
Oak
Teak
Sissoo
Which is correct about transport or conduction of substances ?
Organic food moves up through phloem
Organic food moves up through xylem
Inorganic food moves upwardly and downwardly through xylem
Organic food moves upwardly and downwardly through phloem